For dual exhaust. In line tube repops. Supposedly very close to original.
http://www.ebay.com/itm/390154848125...%3AMEBIDX%3AIT
I am a retard (president of the local chapter) and therefore purchased these for my 68 El Camino, which apparently uses a different tail pipe set up for dual exhaust than the Chevelle. Who knew? Obviously not me.
Free if it is for your own car. Just pay the shipping. Should fit in a small USPS flat rate box (it's free, so I am not going to mess with a special trip to the FedEx store).
First PM to me with an address in the US gets them.